Injector pen



FIG. 1 is a perspective view of an injector pen showing our new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines illustrate structure or features of the injector penthat form no part of the claimed design.

CLAIM The ornamental design for an injector pen, as shown and described.